ceph-ansible/roles/ceph-osd/tasks/osd_directory.yml

---
## SCENARIO 4: USE A DIRECTORY INSTEAD OF A DISK FOR OSD
#

- name: Install dependencies
  apt: pkg=parted state=present
  when: ansible_os_family == 'Debian'

- name: Install dependencies
  yum: name=parted state=present
  when: ansible_os_family == 'RedHat'

- name: Copy OSD bootstrap key
  copy: src=fetch/{{ fsid }}/var/lib/ceph/bootstrap-osd/ceph.keyring dest=/var/lib/ceph/bootstrap-osd/ceph.keyring owner=root group=root mode=600
  when: cephx

# NOTE (leseb): we do not check the filesystem underneath the directory
# so it is really up to you to configure this properly.
# Declaring more than one directory on the same filesystem will confuse Ceph.

- name: Create OSD directories
  file: path={{ item }} state=directory owner=root group=root
  with_items: osd_directories

# Prepare means
# - create GPT partition
# - mark the partition with the ceph type uuid
# - create a file system
# - mark the fs as ready for ceph consumption
# - entire data disk is used (one big partition)
# - a new partition is added to the journal disk (so it can be easily shared)
#

# NOTE (leseb): the prepare process must be parallelized somehow...
# if you have 64 disks with 4TB each, this will take a while
# since Ansible will sequential process the loop

- name: Prepare OSD disk(s)
  command: ceph-disk prepare {{ item }}
  when: osd_directory
  with_items: osd_directories

# Activate means:
# - mount the volume in a temp location
# - allocate an osd id (if needed)
# - remount in the correct location /var/lib/ceph/osd/$cluster-$id
# - start ceph-osd
#

- name: Activate OSD(s)
  command: ceph-disk activate {{ item }}
  with_items: osd_directories
  changed_when: False

- name: Start and add that the OSD service to the init sequence
  service: name=ceph state=started enabled=yes